Lithium battery mounting box

Abstract

The utility model discloses a lithium battery mounting box which comprises a box body, a box cover is arranged at the top of the box body, the box cover is connected and fixed to a horizontal plate in the box body through a compression spring and an expansion rod, a sealing ring arranged on the side end face of the box cover abuts against the side end face of the box body, and the expansion rod movably penetrates through the horizontal plate. When the air pressure in the box body is changed, the box cover opens and closes the box body through the elastic force of the compression spring. The lithium battery mounting box is provided with the box cover which can be automatically opened and closed according to the pressure change in the mounting box, and when the pressure in the mounting box is changed due to the fact that a battery in the lithium battery mounting box generates large heat and cannot be discharged in time, the box cover can be automatically opened and closed according to the elasticity of the compression spring; the heat in the mounting box can be quickly dissipated, the sealing performance of the mounting box after heat dissipation is achieved, and dangerous accidents such as explosion of the mounting box are prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery installation, in particular to a lithium battery installation box. Background Art

[0002] Lithium batteries have the advantages of long service life, high rated voltage and low self-discharge rate, and are widely used in various electrical appliances. Existing electrical appliances using lithium batteries are equipped with power boxes for storing lithium batteries and installing lithium batteries. However, as for the lithium battery boxes in traditional electrical appliances, in order to ensure that the battery boxes have good sealing properties and prevent the internal lithium batteries from contacting the outside water or high humidity air and causing damage, the battery boxes need to have good sealing properties. When lithium batteries are used at high power, they tend to generate a lot of heat. When the lithium battery generates a lot of heat and cannot be discharged from the installation box, the pressure in the installation box will increase sharply, and then there will be dangers such as explosion. Utility Model Content

[0003] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide a lithium battery installation box.

[0004] According to the technical solution provided in the embodiment of the present application, a lithium battery installation box includes a box body, a box cover is provided on the top of the box body, the box cover is connected to a horizontal plate fixed in the box body by a compression spring and an expansion rod, a sealing ring provided on the side end face of the box cover abuts against the side end face of the box body, the expansion rod moves through the horizontal plate, and positioning is achieved by the expansion protrusion on the expansion rod. When the air pressure in the box body changes, the box cover realizes opening and closing of the box body by the elastic force of the compression spring.

[0005] Furthermore, a through hole is provided on the horizontal plate, and the expansion rod movably passes through the through hole, so as to facilitate the positioning of the expansion rod.

[0006] Furthermore, the end surfaces at both ends of the compression spring are respectively fixedly connected to the box cover and the expansion rod, thereby achieving the convenience of fixing and sealing the box cover.

[0007] Furthermore, the compression spring is placed in the through hole to achieve placement and expansion and contraction of the compression spring.

[0008] Furthermore, a groove for placing a sealing ring is provided on the side end surface of the box body to achieve sealing between the box body and the box cover.

[0009] Furthermore, a detachable battery pressure plate is provided in the box body below the horizontal plate to prevent the battery from loosening.

[0010] To sum up, the beneficial effects of the present application are as follows: the device of the present application is provided with a box cover which can be automatically opened and closed according to the pressure change in the installation box. When the batteries in the lithium battery installation box generate a large amount of heat that cannot be discharged immediately and the pressure in the installation box changes, the box cover can be automatically opened and closed according to the elasticity of the compression spring, which is convenient for the rapid dissipation of heat in the installation box and the realization of the sealing performance of the installation box after the heat dissipates, thereby preventing dangerous accidents such as explosion of the installation box. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Other features, objects and advantages of the present application will become more apparent by reading the detailed description of non-limiting embodiments made with reference to the following drawings:

[0012] Figure 1 It is a schematic diagram of the exploded structure of the overall device of the utility model;

[0013] Figure 2 This is a front view of the connection structure of the box cover, the compression spring and the expansion rod of the utility model;

[0014] Figure 3 It is a schematic diagram of the connection structure between the compression spring and the expansion rod of the utility model.

[0015] The reference numerals in the figure are: box body - 1; box cover - 2; sealing ring - 21; compression spring - 3; expansion rod - 4; expansion protrusion - 41; horizontal plate - 5; through hole - 51. DETAILED DESCRIPTION

[0016] The present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the relevant invention, rather than to limit the invention. It is also necessary to explain that, for ease of description, only the parts related to the invention are shown in the accompanying drawings.

[0017] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0018] Lithium battery installation box, such as Figure 1 As described above, the left and right ends of the inner cavity of the box body 1 are provided with horizontal plates 5 for horizontal prevention, and through holes 51 are provided on the horizontal plates 5. The box cover 2 abuts against the inner end surface of the box body 1 through the sealing ring 21 sleeved on its side end surface.

[0019] like Figure 1 and Figure 2 As shown, the compression spring 3 and the expansion rod 4 arranged on the lower end surface of the box cover 2 are connected to the horizontal plate 5, and the expansion rod 4 passes through the through hole 51 on the horizontal plate 5, and the expansion protrusion 41 on the expansion rod 4 is used to achieve the limit, and the compression spring 3 is located in the through hole 51;

[0020] like Figure 2 and Figure 3 As shown, the upper end face of the compression spring 3 is fixedly connected to the lower end face of the box cover 2, and the lower end face of the compression spring 3 is fixedly connected to the expansion rod 4, and the expansion protrusion 41 on the expansion rod 4 is inclined upward, which can facilitate the expansion rod 4 to be inserted into the through hole 51, and can also limit the expansion rod 4 from being pulled out of the through hole 51.

[0021] Before use, first install the lithium battery to be installed in the box body 1, then press the detachable battery pressure plate to prevent the battery from loosening on the upper end surface of the installed lithium battery, and then press the box cover 2 on the box body 1, so that the expansion rod 4 passes through the through hole 51, and the compression spring 3 is placed in the through hole 51. At the same time, in order to prevent the installed lithium battery from loosening, the lower end surface of the expansion rod 4 on the box cover 2 can be abutted against the detachable battery pressure plate. At this time, the entire box body 1 is sealed by closing the sealing ring 21 on the box cover 2;

[0022] When the lithium battery generates heat during use, the air temperature in the installation box increases, and at the same time, the pressure in the box increases, making the pressure in the box body 1 greater than the pressure outside the installation box. At this time, an upward force will be applied to the box cover 2. At this time, because the box cover 2 is fixedly connected to the expansion rod 4 by the compression spring 3, and the expansion rod 4 is connected to the horizontal rod 5 by the expansion protrusion 41, the expansion rod 4 cannot move, and the compression spring 3 has a certain elastic force. Therefore, when the air pressure in the box body 1 can overcome the elastic force of the compression spring 3, the box cover 2 will move up. When the box cover 2 moves up, the seal between the cover 2 and the box body 1 will be destroyed. At this time, the high-pressure air in the box body 1 will be discharged to prevent the heat in the box body 1 from increasing sharply, causing the pressure in the box body 1 to rise sharply, resulting in explosions and other dangerous accidents.

[0023] The detachable battery pressure plate that prevents the battery from loosening in this solution is a horizontal plate, which can be fixed by clamping the lower end surface of the expansion rod 4 and the upper end surface of the installed lithium battery, thereby preventing the lithium battery from loosening.

[0024] The above description is only an explanation of the preferred embodiments of the present application and the technical principles and other schemes used. At the same time, the scope of the invention involved in the present application is not limited to the technical scheme formed by a specific combination of the above technical features, but also should cover other technical schemes formed by any combination of the above technical features or their equivalent features without departing from the inventive concept. For example, the above features are replaced with the technical features with similar functions disclosed in the present application (but not limited to) by each other to form a technical scheme.

Claims

1. A lithium battery installation box, comprising a box body (1), characterized in that: A box cover (2) is provided on the top of the box body (1), and the box cover (2) is connected and fixed to a horizontal plate (5) inside the box body (1) through a compression spring (3) and an expansion rod (4). A sealing ring (21) is provided on the side end surface of the box cover (2) and abuts against the side end surface of the box body (1). The expansion rod (4) movably passes through the horizontal plate (5) and is positioned by an expansion protrusion (41) on the expansion rod (4). When the air pressure inside the box body (1) changes, the box cover (2) is opened and closed by the elastic force of the compression spring (3).

2. The lithium battery installation box according to claim 1, characterized in that: The horizontal plate (5) is provided with a through hole (51), and the expansion rod (4) movably passes through the through hole (51).

3. The lithium battery installation box according to claim 2, characterized in that: The end surfaces at both ends of the compression spring (3) are respectively fixedly connected to the box cover (2) and the expansion rod (4).

4. The lithium battery installation box according to claim 3, characterized in that: The compression spring (3) is placed in the through hole (51).

5. The lithium battery installation box according to claim 1, characterized in that: The side end surface of the box body (1) is provided with a groove in which the sealing ring (21) is placed.

6. The lithium battery installation box according to claim 1, characterized in that: A detachable battery pressure plate is provided in the box body (1) below the horizontal plate (5) to prevent the battery from loosening.

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